/Engine/Plugins/BlueprintFileUtils/Source/BlueprintFileUtils/Public/BlueprintFileUtilsBPLibrary.h
Finds all the files and/or directories within the given directory and any sub-directories. Files can be found with anoptional file extension filter.
true if anything was found, false otherwise
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="FileUtils") static bool FindRecursive ( const [FString](API\Runtime\Core\Containers\FString) & StartDirectory, [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & FoundPaths, const [FString](API\Runtime\Core\Containers\FString) & Wildcard, bool bFindFiles, bool bFindDirectories )